Automatic measuring device



Patented Sept. 4, 1934 UNITED STATES-PATENT OFFICE AUTOMATIC MEASURING DEVICE Henry Water-stone, Richwood, W. Va. Application November 25, 1932, Serial No. 644,333

' 2 Claims. (01. 221-101 The invention relates to an automatic measur- This shaft 6 is equipped with a friction clutch 7 ing device and more especially to an electro-meincluding the parts 8 and 9. the latter-being in chemical measurer for powdered or granular mathe form of a setting dial which on the outer terial. face thereof is suitably scaled to be indicative of The primary object of the invention is the prodetermined quantities to show the amount of 60 vision of a device of this character, wherein powmaterial which may be passed by the rotor or dered or granular material, such as flour and wheel in the operation of the device. Coacting similar substances, during transit for delivery with the dial 9 is a pointer 11, the same being thereof, can be measured into determined quantisuitably fixed to the housing A and disposed to 10 ties and this being had without the use of scales coact with the scale face of said dial in the set- 65 or hoppers as ordinarily required, the device beting of the latter, which is manually controlled. ing of novel form and electro-mechanically op- This dial 9 is formed with a striker 10 for conerated. trolling the switch includedin the circuit E to- Another object of the invention is the provision open such circuit. The switch includes the flexof a device of this character which extremely ible contact wand the stationary contact 13. 70 simple in construction, thoroughly 'reliable and When the striker 10 engages the flexible contact efficient in its purpose, strong, durable, and inex- 12.it will move away from the stationary contact pensive to manufacture and install. 13 and thereby opening the circuit E by the switch With these and other objects in view, the inand in this the motor D will be stopped, thus shutvention consists in the features of construction, ting off the conveyor or feeder mechanism, as 75 combination and arrangement of parts as will should be apparent. be hereinafter more fully described in detail, il- Movable through a suitable clearance in the lustrated in the accompanying drawing, which housing A to be projected'into the path of the discloses the preferred embodiment of the invenblades of the rotor or wheel 1 is the core of an tion, and pointed out in the claims hereunto apelectric magnet 14, the same being included in pended. the circuit E and energized on the closing of said The view in the drawing is a side elevation of circuit and deenergized on the opening thereof, the device partly in section and showing diagramthe movable core of said magnet, when projected matically the electric equipment in association into the path of the blades of said wheel or rotor,

30 with said device. will lock the same against rotation, the core being 5 Referring to the drawing in detail, the device projected when the magnet 14 is deenergized. comprises a housing A of a shape and construc- On energizing the magnet 14 the core thereof tion to accommodate therein a four-bladed rotor will be drawn into the same and thus release or wheel 1, the housing above the rotor or wheel the rotor or wheel 1.

being formed with an inlet 13, while below the Mounted on the shaft 2 of the rotor or wheel 90 wheel is the outlet C. This inlet B is in com- 1 is a multiple cam 15 against which coacts a munication with a suitable material conveyor or compensating spring 16 functioning as a braking feeder for powdered or granular materials and medium to take care of the proper unbalancing the same is controlled for operation by a motor of the rotor or wheel 1 in conformity with the D of the electric type arranged within a circuit E weight of the load of material imposed upon any 95 normally'open and receiving its current from one of its blades and in this fashion such rotor any conventional electric supply. The circuit E or wheel is prevented from coasting. The spring is opened and closed by a switch hereinafter 16 is arranged upon a suitable support 1'7 therefully described. for.

The bladed wheel or rotor 1 is keyed or splined The core 18 of the magnet 14 is thrust into. 100 to a shaft 2 suitably journaled in the housing A. locking position through the medium of a spring The material to be measured is let into the hous- 19 whe the magnet 14 1 dee e i d, ing through the inlet B and gravitates pon a In the working of the device the dial 9 is manconfronting blade i th pa thereof so that ually set by a hand knob 20 thereon with rela- 5 upon unbalancing the rotor or wheel the latter tion to the pointer 11 to the amount of material 05 will be caused o rotate for a purpose presently to be measured by the wheel or rotor 1 and on described. setting such dial 9 the switch of the circuit E is Upon the shaft 2 is a worm gear 4 meshing closed, thus the motorD is started for the feeding with a companion worm gear 5 fixed to a shaft of material by a conveyor F through the inlet 6 below the shaft 2 and at right angles thereto. B of the housing A and the confronting blade of 1 ting of such dial, the building up of the ma- 'terial upon the wheel or rotor taking place until the striker 1O acts upon the switch to open the same, whereupon the motor D is stopped and the core 18 of the magnet 14, which'is in releasing position when said magnet is energized, 'permitting the measured material to be discharged through the outlet C will then be thrown to locking position to stay the further measuring action of the wheel or rotor 1 as the next blade thereof following the load carrying blade will be engaged by said core 18 and thus hold the rotor or wheel passive.

What is claimed is:

1. In a device of the character described, a housing providing a material passage therethrough, a bladed rotor journaled in said housing so that its blades may be projected into the 'material passage, a manually controlled dial having frictional clutch connection with the rotor for coaction therebetween, an electric circuit having a switch, a motor in said circuit for operating a. conveyor for feeding material to the housing means on the dial to operate said switch so that its blades will project 'into' the material passage, a manually controlled dial having frictional clutch connection with the rotor for coact tion thcrebetween, an electric circuit having a switch, a motor in said circuit for operating a conveyor for feeding material to the housing means onthe dial to operate said switch 'for the opening of the circuit, an electric magnet arranged in said circuit and having a core for movement LltCw locking position with, respect to said rotorv and means coacting with the rotor to prevent coasting thereof.

HENRY WATERSTONE. 

